One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(10,14)(11,12)(17,18,21,24)(19,26,25,22)(20,27,29,28)(23,31,32,30)(1,3)(2,5)(4,7)(6,8)(9,10)(11,15)(12,16)(13,14)(17,19)(18,22)(20,28)(21,25)(23,30)(24,26)(27,29)(31,32) involution — undirected(3,7)(5,8)(10,14)(15,16)(17,20,21,29)(18,23,24,32)(19,27,25,28)(22,31,26,30)(2,6)(3,7)(9,11,13,12)(10,15,14,16)(17,18)(19,26)(20,23)(21,24)(22,25)(27,30)(28,31)(29,32)(3,7)(5,8)(9,12,13,11)(10,15,14,16)(18,24)(19,25)(20,29)(30,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.